Thanks to regine: MouseHaus table, a new interactive table:

MouseHaus Table provides a computationally enhanced physical environment to support discussion and decision making about urban design. MouseHaus Table provides a physical interface that enables participants who have no previous computer experience to interact with a pedestrian simulation program.

Unlike other tangible interaction projects, MouseHaus enables users to employ ordinary materials in the interface. Users register objects to represent urban design elements by showing them under the camera, then they use the objects to construct a street layout for simulation.

The website provides various footage about it. They used it to study pedestrian behavior pattern: "<iusers discuss and attempt to arrange urban design elements to produce a preferred movement pattern and density level" (hey jamie have a look!).